How Far Can You See?
How Far Can You See? How far the human eye can see depends on how many particles of light, or photons, a distant object emits. The farthest object visible with the...
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Can Dogs See Colors?
Can Dogs See Colors? There’s a common misconception that dogs can only see in monochrome and use varying brightness levels to identify the outlines of items. Yet...
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Why Is a Horse Always Mounted from the Left Side?
Why Is a Horse Always Mounted from the Left Side? The custom of mounting and dismounting a horse from the horse’s left side probably started in very olden times,...
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Why Do We See Stars When We Bump Our Heads?
Why Do We See Stars When We Bump Our Heads? The “Stars” we see if we receive a hard blow on the head are really a sensation of light caused by the nerves of the eye....
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How Many Sides Does a Rainbow Have?
When I see a Rainbow, can People see the other side? or How many sides does a rainbow have? Children love to ask why — but you may not always have the answers. We...
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